Zurn 1" x 1" Wilkins 700XL Dual Check Valve, Union FNPT x FNPT (Lead Free)

**Lead Free Application This Wilkins Series 700 check valve is designed for installation on potable water lines to protect against both back-siphonage and back-pressure of polluted water into the potable water supply. The Model 700 shall provide protection where a potential health hazard does not exist. Standards Compliance ASSE® Listed 1024 CSA® Certified Materials Main valve body: Cast Bronze ASTM B 584 Elastomers: Buna Nitrile (FDA approved) Polymers: Noryl, NSF Listed (1/4"-1/2"), Delrin NSF Listed (3/4"-1") Springs: Stainless Steel, 300 Series